Swedish police have found drugs and a stun gun on pop sensation Justin Bieber's tour bus, in the latest scandal to hit the 19-year-old.

A small amount of drugs and a stun gun were found when officers raided the bus parked under the Globen concert venue in Stockholm, where Bieber was performing on Wednesday.

Police spokesman Lars Bystrom has refused to reveal identify which drugs were discovered on the blacked out bus - but said officers ordered the search after they 'smelt cannabis' coming from the vehicle earlier that evening.

The raid was another notch in a string of high-profile controversies for the Canadian singer

Bystrom said are no suspects and no one has been arrested. He declined to identify the drug, saying it had been sent to a laboratory for an analysis

Justin Bieber's bus is pictured during the police raid, where officers allegedly found drugs and a stun gun

Bieber apologised in January after being pictured smoking a suspicious looking cigarette in a hotel room with friends.

Bystrom said police have no
suspects and no one has been arrested. He declined to identify the drug,
saying it had been sent to a laboratory for an analysis, which will take at least a week to identify.

He
says police acted after smelling marijuana coming from inside the bus
at 7.10pm when it was parked outside the hotel where Bieber was staying.

According to TMZnoone will be charged as officers cannot attribute who owned the drugs, which a local paper claims was a tiny amount cannabis.

The drug squad was alerted and searched the bus - which the pop star may have been on - after the concert, according to Bystrom.

He said: 'I can say that we are 99 per cent sure Justin Bieber was on the bus, but cannot confirm 100 per cent.

'We had some surveillance outside the hotel, considering that there were some fans there.

'When Bieber's bus was about to leave, one of the policemen thought he smelled a distinct cannabis scent.

'There was approximately ten people on the bus.'

This conflicted with earlier reports that the bus had been empty when police searched it.

Bieber is in Stockholm as part of a
world tour and bratty behaviour has caused controversy in recent months,
taking him from squeaky clean teen favourite to rebel superstar.

Bieber's reported attitude struck again after he took on cosmetics giant Elizabeth Arden.

Clubbing: Justin Bieber has been partying heavily since he arrived in Stockholm - pictured here yesterday at The Rose nightclub

Cause for controversy: Justin Bieber was photographed holding a cigarette during a party in Newport Beach, California on January 2

The Canadian pop star is said to have
thrown a temper tantrum when taking part in a paid photoshoot in
Copenhagen, Denmark over the weekend.

The chart topping star got things off to a bad start as he allegedly showed up six hours late for the shoot.

A source claimed to RadarOnline.com that Justin's actions were simply 'disgraceful'.

The insider told the website: 'After
showing up six hours late, Justin threw a temper tantrum because they
wanted him to wear a bell boy hat — but he refused.

'This kid is quickly getting a reputation as someone that no one wants to work with. It was disgraceful.'

It is latest scandal to hit the previously squeaky clean star.

Drugs bust: Swedish Police said they have found drugs on Justin Bieber's tour bus (pictured) - officers often surround the bus to protect the singer from fans

Pungent smell: Officers said they smelltmarijuana coming from inside the bus when it was parked outside the hotel where Bieber was staying.

Justin has an estimated personal
wealth of around £70million, but he was also accused of refusing to
leave a tip after dining at a high end restaurant.

The
singer was joined by his beautiful girlfriend Selena Gomez at the
classy restaurant where they were said to be treated to a free meal.

A
source told the website the couple went to 'a very upscale restaurant
on Friday night for a free meal and even though the meal was
complimentary, Justin couldn’t be bothered to tip the hard working
waiter.

'It was very low class and just disrespectful. Selena acted like a true lady, but Justin acted like an entitled punk.'

Selena's friends are said to be furious she is thinking of reconciling with Justin, who they believe is a bad influence on her.

His volatile relationship with the actress reflects a seemingly chaotic lifestyle for the millionaire.

UK fans will remember Bieber's
'meltdown' in the London after he was caused outrage when he turned up
to his debut night at the O2 on March 5 a reported two hours late.

From squeaky clean teenager to party animal: The Canadian superstar was spotted partying the night away in Stockholm

Raid: While Bieber was performing onstage at the Globe Arena on April 23 (pictured) drugs officers were tearing through his empty tour bus

Although
he disputed the timings and claimed he was only 40 minutes late on
stage, hundreds of children were left heartbroken at being forced to
leave without seeing their idol in person - as the concert was taking
place on a weekday.

The day
after his lateness the Baby singer lashed out at a photographer in a
foul-mouthed rant after one shouted that Justin should 'f**k off back to
America'.

Pushing his way out of the vehicle
and shoving past members of his entourage, Justin fumed: 'What the f***
you say? What d'you say? I'll f***ing beat the f*** out of you, man!'

With
his face grimaced up in anger, the star had to be held back by a member
of his security team as he attempted to grab the camera from the
photographer.

This followed an incident where Justin Bieber's monkey Mally was confiscated after the Canadian allegedly lacked documents certifying compliance with animal health and species-protection regulations.

The monkey could end up spending
months in a German animal shelter after the singer was given an
extension to sort out the paperwork needed to get the animal back.

The
animal was confiscated by customs officials in Munich as Bieber flew in
from LA to perform a series of concerts. Now the pop star is trying to
get his pet back.

Apologies: Bieber told fans he was sorry after being pictured with a suspicious looking cigarette

Fall of an angel: Pictures Justin Bieber's Calabasas mansion emerged on March 19 this year, with alcohol and Shisha pipes

Swedish police say drugs have been found on Justin Bieber's tour bus (pictured him in Stockholm yesterday)

Tempus fugit: Justin Bieber has been accused of arriving six hours late to a photoshoot in Copenhagen, Denmark, over the weekend

Mally,
a capuchin monkey, was given to the singer for his 19th birthday last
month from music producer Jamal 'Mally Mal' Rashid. He had been taken
away from his mother when he was only nine weeks old.

Normally capuchin monkeys remain with their mothers for at least the first year of their life.

He is now in quarantine in a Munich
animal sanctuary where his only companion is a cuddly toy that he treats
as a surrogate mother.

Following that debacle, he caused
outrage after leaving a 'tasteless' comment in the guestbook at the Anne
Frank House in Amsterdam.

He visited the famous home where
Jewish wartime diarist Frank and her family hid from Nazi persecution
for two years during the Holocaust.

After spending an hour touring the
home on Saturday, which opened as a museum in 1960, Bieber wrote a
message in the guestbook, which read: 'Truly inspiring to be able to
come here.

'Anne was a great girl. Hopefully she would have been a belieber.'

After coming under fire for that insensitive
behaviour, the
pop star created controversy once again after posting a racy cartoon
depicting himself in bed with a naked girl lying on his chest with the
words 'Justin Belieber' emblazoned across the top.

Riled: Justin had to be held back by a member of his entourage as he appeared to lash out at a photographer in London in March

Is it all too much? The 19-year-old singer seemed to be visibly enraged by something the snapper said as he prepared to make his way to a waiting vehicle earlier this year

Empty seats: Bieber sparkled speculation he was having a meltdown after he was late for his fans in London, forcing them to leave without seeing him perform

Stocking up: Justin's entourage made a stop at the OnePiece store to pick up some extra pieces

As it is widely known, 'Belieber' is often the name given to his legion of teenaged female fans.In the snap, the Bieber lookalike is cuddling the seemingly naked young admirer.

She is seen lying on the teen titan's bare chest with her eyes closed as Justin's animated likeness looks on with wide-eyed excitement.

It seems that his controversial behaviour and provocative on-stage routines may have cost him his scheduled concert in Oman next month.

The raucous teen, who announced that he was cancelling the gig earlier this week, reportedly upset Muslim leaders in the Islamic country who deemed him 'too sexy.'

A source in the country told The Daily Star: 'Many people here were horrified by what they had heard about Bieber.'

He as announced that he will be adding an extra date in Dubai on May 5, taking the place of the Oman performance.

Despite the raid, the star was spotted letting out his inner child by messing about in a bright red all-in-one earlier in Stockholm, before police revealed the results of their raid.

Completing
his look with a pair of red Givenchy trainers and a black and white cap
the superstar larked about.

He
grew so fond of his onesie that he kept it on and went out to the Rose
Club in Stockholm, Sweden, following his concert in the capital.